$ git clone -n https://src.fedoraproject.org/rpms/archivemount.git /var/lib/mock/f40-build-2273989-55005/root/chroot_tmpdir/scmroot/archivemount
Cloning into '/var/lib/mock/f40-build-2273989-55005/root/chroot_tmpdir/scmroot/archivemount'...
$ git fetch origin 2c70fa438b7eec7aa32ccb72a9d41d9793df9195:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/archivemount
 * [new ref]         2c70fa438b7eec7aa32ccb72a9d41d9793df9195 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c70fa4 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild